stolz



-(No Model.) I 2 Sheets-Sheet 1.

F. G. STOLZ. Q

LANTERN FOR OVENS.

N0. 604,239. Patented May 17-, 1898.

/s 4/ b o (No Model.)

2 Sheets-Sheet 2.

P. C. STOLZ.

LANTERN FOR OVENS.

Patented May 17, 1898.

Fig.5

FERDINAND O. STOLZ,

PATENT Prion.

OF NEWV YORK, N. Y.

LANTERN FOR OVENS.

SPECIFICATION forming part of Letters Patent No. 604,239, dated May 1'7, 1898.

Application filed September 11, 1897. Serial No. 651,365. (No model.)

To all whom it may concern.-

Be it known that I, FERDINAND O. S'roLz, a subject of the Emperor of Germany, and a resident of New York, county and State of New York, have invented certain new and useful Improvements in 'Lanterns for Ovens, of which the following is afull, clear, and exact specification, reference being had to the accompanying drawings, wherein Figure 1 is an elevation; Fig. 2, a crosssection on line 2 2, indicated in Fig. 1. Fig. 3 is a vertical section on line 3 3, indicated in Fig. 2. Fig. 4 is a similar section on line 4 4, indicated in Fig. 3, showing the case of my improved lantern open and an electric (incandescent) lamp affixed therein. Figs. 5 and 6 are enlarged details, a front and a top view, respectively, of the clasp for locking the case of the lamp in position.

Similar letters of reference indicate corresponding parts in all views of the drawings.

My invention relates to illuminating devices; and it consists of a lantern for ovens and adapted to be permanently immured in the wall of an oven.

The lantern consists of an outer stationary frame A, an inner rotary frame or case B, turnably mounted in the stationary frame, a lamp 0, set within the case B, reflector D, and hasps 'n and 'n securing case B in position.

The outer stationary frame consists of the uprights a, head-beam 1), base 0, and tie o. Uprights a are shown in Fig. 2 in section, and head-beam b, base 0', and ties c are shown in section in Fig. 3. Base 0' and tie a project from the frame A, forming semicircular ledges connected by wall 0 extending upward beyond the level of tie c, forming a flange c surrounding the lower edge of the inner case B. Head-beam b is similarly shaped and is also provided with a flange b projecting downward.

The inner case B is cylindrical in shape and is provided with hollow trunnions 'i and '5, rigidly secured to its top part cl and bottom part 6, respectively. These trunnions are held in their bearings m m, provided in top beam 12 and tie o by hasps n and n, (shown in enlarged detail views, Figs. 5 and 6,) and connect with fines p and 19, respectively. Through these flues and the hollow trunnions the necessary air is conducted into the inner case B. These flues and hollow trunnions may also, as shown in Fig. 4, serve as conduits for electric wires.

Besides retaining the trunnions 7; and i in their respective bearings the hasps n and n have the additional function to prevent the inner case B from turning in its hearings. For this purpose springs q, to which a knob q is secured, is riveted on the inside of the hasps n and 'n, and trunnions e' and t" are provided with bores 1' in such position that one of these bores will be opposite the knobs q when the case B is turned to or from the oven. When the hasps are closed and fastened to the beam 1) and tie 0, respectively, by turnknobs .9, whose heads pass through the slots 5 of the hasps, knobs q are pressed into the bores r, and thereby secure the inner case B in position.

The hull of the cylindrical case B consists of two parts, an opaque part f, made, preferably, of some incombustible material, such as asbestos cement, filled on wire-netting secured to posts h, and a transparent part 9, which is preferably a sheet of mica set in grooves provided in the adjoining edges of posts h and in the top and bottom parts 01 and e. The whole case B is divided vertically on line z 2, as shown in Fig. 4, and the parts are hinged together by hinges it. When closed, these parts are held together by spring 7t and pin lo, the former being secured to one part of top (1 and the latter entering into a correspon ding recess provided in the other part.

The inner case B is turned in frame A by handle y, set in crank w, rigidly secured to the lower trunnion. Flange o of the post h engages in ledges 1;, provided in the uprights a, and thereby limits the motion of the inner case B to that extent that either the transparent or the opaque part is exposed.

Lamp 0 may be an oil, gas, or electric lamp. If a gas-burner is used, the fixture may be secured to the trunnion e' similarly to the electric fixture shown in Fig. 4, and the gasconduit may be passed through the hollow trunnion r in the same manner as the electric conduits x. (Shown in the same figure.)

Reflector D may be secured in convenient position to the back f within the inner case B, andconsists of a concaved metallic mirror shaped to throw the concentrated rays of the light into the space to be illuminated through the pane G. The reflector may be made-adjustable from outside of the case to turn the rays of the light in such direction as may be required.

Either above or below the reflector an oblong look-hole t is provided in the back part f, through which the inner space of the oven may be observed. When the lantern is not in use, its back f is turned into the oven. The look-hole tis then covered by panel 2?. This panel being oblong in shape, its width being greater than its height, is fastened in its place to the back f by bar 14, secured to the stem of knob 10', set in its center. Bar u is equal to the greatest diameter of panel 25, and when turned from horizontal to vertical position its ends catch beyond the edges of the look-hole t and hold the panel secured in its position.

I claim as my invention and desire to secure by Letters Patent 1. A lantern comprising an open outer case or frame and a closed inner case, rotatably mounted therein, hollow trunnions communicating with the inner case and through the outer case With fines provided in the Wall of the oven, a lighting-fixture and a reflector secured in the inner case, means for turning the inner space of the case with fines provided in the Wall above and below the outer case.

3. The combination with an open outer case or frame and a closed inner case, rotatably mounted therein, and adapted to contain a lighting-fixture and an adjustable reflector, of hasps secured to the top beam and tie of the outer frame, springs riveted to the hasps and knobs secured to the springs in position to engage bores provided in the trunnions of the inner case and thereby to lock the inner case in position when the hasps are fastened.

In Witness that I claim the improvements described in the foregoing specification I have signed my name in the presence of two subscribing witnesses.

FERDINAND C. STOLZ.

Witnesses:

HENRY SCHREITER, ROBERT VALENTINE MATHEWs. 

